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The blue lazer light of the blu-ray technology can squeeze the HD-video of more than 4 hours on a single sided DVD disk. The blu-ray DVD disk format has the latest technology and for next generation is the preferred choice for the storage removal. The blue lazer used in the blu-ray drives give better results and performance than the traditional DVD drives that use the red lazer. The DVD can store up to 4.7 Gigabytes of data, and the single sided blu-ray DVD disk can store 27 Gigabytes of data. The backers of bluray disk that work on the dual layer disk have capacity to store data of 50 GB. The bluray format gives high performance with the high-definition T.V displays. The quality of the picture in HDTV is greater than the picture display by the other traditional televisions.
There is tuff competition between the traditional DVD’s and the bluray format DVDs. The high definition DVD is backed by Toshiba & NEC. While the bluray disc format is supported by group of magor companies like the sony, Philips, samsing and Hitachi. Now that the HP and dell are supporting the blu-ray technology, the sales of the Blu-ray discs will increase and will be the market leader. The DVD+RW efficiently compete against the formats of DVD-R and DVD-RW. Because of the low number of customers the DVD recorders and burners were forced in market even though they were not popular and accepted by the customers. The electronic products like the analog TV and DVD players are commodities. The movie industry as well as the consumers prefers the blu-ray media.
The purpose of the blu-ray BD disk format was to support the recording of the HD video, media applications and the movie distribution. The appearance of the blu-ray BD disk is similar to that of the Compact disk (CD) or the Digital Versatile Disk (DVD). Dual layer DVD can store 9 GB and the dual layer Blu-ray disk can store 50 GB of data. The wave length of the blue lazer used for blu-ray recording is very narrow. Therefore, similar physical space of the disc can hold more volume of data. The high definition multi-media interface helps to connect the media devices (projectors and high definition DVD players). 25 GB data can be stored on a single layer blu-ray disk and 50 GB of data on the dual layer blu-ray disk.
This recording and play back can be done on both the recordable BD-R & rewritable BD-RE disks. By using the BD-AV blu-ray format, the users can use standard definition or the high definition for authoring blu-ray disk that can be played in standalone blu-ray player. The standard definition can be recorded from the analog source. SD can also be transferred directly form the digital video camcorders. So, the high definition material of two hours can be stored on single layer blu-ray disc of 25GB.
The BD-ROM format fulfills the movie industry’s requirement for distribution of the “HD commercial videos” on the prerecorded BD-ROM. It has the features of the Digital Versatile Disk (DVD) and also supports the multi-channel audio, high definition, and features of network. NEC and Toshiba both developed the high definition DVD (HD-DVD) format. Both the blu-ray and the HD-DVD are quite different formats.
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